Especially sentences like "filename ends in .suffix" are easier to
parse if the suffix is surrounded by quotes. In sentences like
"requires a .service unit", where the suffix is used as a class
designation, there is no need to use quotes.
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.automount</filename> encodes information
+ <literal>.automount</literal> encodes information
about a file system automount point controlled and
supervised by systemd.</para>
about a file system automount point controlled and
supervised by systemd.</para>
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.device</filename> encodes information about
+ <literal>.device</literal> encodes information about
a device unit as exposed in the
sysfs/<citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>
device tree.</para>
a device unit as exposed in the
sysfs/<citerefentry><refentrytitle>udev</refentrytitle><manvolnum>7</manvolnum></citerefentry>
device tree.</para>
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.mount</filename> encodes information about
+ <literal>.mount</literal> encodes information about
a file system mount point controlled and supervised by
systemd.</para>
a file system mount point controlled and supervised by
systemd.</para>
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.path</filename> encodes information about
+ <literal>.path</literal> encodes information about
a path monitored by systemd, for
path-based activation.</para>
a path monitored by systemd, for
path-based activation.</para>
when any of the configured paths
changes. The argument is a unit name,
whose suffix is not
when any of the configured paths
changes. The argument is a unit name,
whose suffix is not
- <filename>.path</filename>. If not
+ <literal>.path</literal>. If not
specified, this value defaults to a
service that has the same name as the
path unit, except for the suffix. (See
specified, this value defaults to a
service that has the same name as the
path unit, except for the suffix. (See
<para>Snapshot units are not configured via unit
configuration files. Nonetheless they are named
similar to filenames. A unit name whose name ends in
<para>Snapshot units are not configured via unit
configuration files. Nonetheless they are named
similar to filenames. A unit name whose name ends in
- <filename>.snapshot</filename> refers to a dynamic
+ <literal>.snapshot</literal> refers to a dynamic
snapshot of the systemd runtime state.</para>
<para>Snapshots are not configured on disk but created
snapshot of the systemd runtime state.</para>
<para>Snapshots are not configured on disk but created
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.socket</filename> encodes information about
+ <literal>.socket</literal> encodes information about
an IPC or network socket or a file system FIFO
controlled and supervised by systemd, for socket-based
activation.</para>
an IPC or network socket or a file system FIFO
controlled and supervised by systemd, for socket-based
activation.</para>
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.swap</filename> encodes information about a
+ <literal>.swap</literal> encodes information about a
swap device or file for memory paging controlled and
supervised by systemd.</para>
swap device or file for memory paging controlled and
supervised by systemd.</para>
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.target</filename> encodes information about
+ <literal>.target</literal> encodes information about
a target unit of systemd, which is used for grouping
units and as well-known synchronization points during
start-up.</para>
a target unit of systemd, which is used for grouping
units and as well-known synchronization points during
start-up.</para>
<title>Description</title>
<para>A unit configuration file whose name ends in
<title>Description</title>
<para>A unit configuration file whose name ends in
- <filename>.timer</filename> encodes information about
+ <literal>.timer</literal> encodes information about
a timer controlled and supervised by systemd, for
timer-based activation.</para>
a timer controlled and supervised by systemd, for
timer-based activation.</para>
<listitem><para>The unit to activate
when this timer elapses. The argument is a
unit name, whose suffix is not
<listitem><para>The unit to activate
when this timer elapses. The argument is a
unit name, whose suffix is not
- <filename>.timer</filename>. If not
+ <literal>.timer</literal>. If not
specified, this value defaults to a
service that has the same name as the
timer unit, except for the
specified, this value defaults to a
service that has the same name as the
timer unit, except for the
<para>Along with a unit file
<filename>foo.service</filename> a directory
<filename>foo.service.d/</filename> may exist. All
<para>Along with a unit file
<filename>foo.service</filename> a directory
<filename>foo.service.d/</filename> may exist. All
- files with the suffix <filename>.conf</filename> from
+ files with the suffix <literal>.conf</literal> from
this directory will be parsed after the file itself is
parsed. This is useful to alter or add configuration
settings to a unit, without having to modify their
this directory will be parsed after the file itself is
parsed. This is useful to alter or add configuration
settings to a unit, without having to modify their